*{
    margin: 0;
    padding: 0;
}
html{
    font-size:10px;
    font-family: Helvetica;
}
html,body{
    width: 100%;
    min-height: 100vh;
    background-color: #000;
    color:#fff;
}
.section{
    width: 100%;
    /* background-color: pink; */
    height: 100vh;
    position: relative;
    overflow: hidden;
    color: #fff;;
}
.section1{
    background-color: #FFF;
}
.image1-box{
    position: relative;
    height: 100%;
    width: 50%;
    background-color: rgb(199, 57, 61);
    position: absolute;
    top:50%;
    left: 0;
    transform: translateY(-50%);
}
.image1{
    position: absolute;
    left: -100%;
    top: 100%;
    width:70vw;
    transform: scale(0.5);
}
.image2{
    position: absolute;
    right: -100%;
    width: auto;
    opacity: 0;
    transform: translateY(-50%);
}

/* 第二屏 */
.section2{
    background-color: #000;
    height: 200px;
    padding-top:200px;
}
.section2 .w1,.section2 .w2,.section2 .w3{
    opacity: 0;
    font-size: 42px;
    text-align: center;
    margin-left: 100px;
    color:#fff;
    font-weight: 600;
}
.section3 {
    background-color: #000;
    z-index: 10;
}
.section3 .video1{
    width: 100%;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

.list{
    display: flex;
    justify-content: space-evenly;
    width: 1200px;
    margin: 0 auto;
    background-color: transparent;
    position: absolute;
    top:305px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
}
.list li{
    opacity: 0;
    flex-shrink: 0;
    flex-grow: 1;
    position: relative;
    width: 374px;
    text-align: center;
    margin: 0 30px;
    transform: scale(1);
    border-radius: 50px;
    overflow: hidden;
    top:-20px;
}
.list li.l2{
    transform: scale(1);
    top: 0;
}
.list li img{
    width: 100%;
}
.section4{
    background-color: #000;
    z-index: 11;
    color:#fff;
    margin-top: -200px;
}
.section4 img{
    width: 100%;
}
.section4 .des{
    position: absolute;
    bottom: 0;
    z-index: 11;
    color: #fff;
    font-size:20px;
    width: 1440px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
}
.section4 .cover{
    position:absolute;
    top:50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 530px;
    height: 530px;
    background: url(https://wwwstatic.vivo.com.cn/vivoportal/files/resource//product/1700187695759/images/iqoo12-distance-img1-lg.jpg.webp) no-repeat;
    background-size: cover;
    border-radius: 180px;
    background-position: 100% 100%;
}
.section4 .des .t{
    font-size:40px;
}
.section4 .des h1{
    font-size: 80px;
}
.section4 .des .eye{
    font-size: 20px;
    margin: 90px 0;
}
.section4 .des .gray{
    font-size: 14px;
    color:#8a8f99;
    margin-top: 30px;
}


/*  */
.section5 .cover{
    background: url(https://wwwstatic.vivo.com.cn/vivoportal/files/resource//product/1700187695759/images/iqoo12-sky-img1-lg.jpg.webp) no-repeat;
    background-size: cover;
    background-position: center center;
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 200px;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    overflow: hidden;
}
.section5 .cover .des{
    color: #fff;
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
}
.section5 .cover .des h1{
    font-size: 40px;
}
.section5 .cover .des p{
    font-size: 14px;
    margin-top: 20px;
    white-space: nowrap;
}